JP2018533874A - Method and apparatus for determining CSI-RS transmission resource - Google Patents

Abstract

The present disclosure discloses a method and apparatus for determining CSI-RS transmission resources. In the method, the user equipment UE acquires UL / DL configuration information for determining CSI-RS resource position, and based on the UL / DL configuration information, a subframe type of a subframe for CSI-RS transmission And determines the resource position of the CSI-RS among the subframes for CSI-RS transmission based on the determined subframe type.
[Selected figure] Figure 1

Description

  This application claims the priority of Chinese patent application 201510708555.6 filed on October 27, 2015 to the Chinese Patent Office and Chinese patent application 201510733558.5 filed on November 2, 2015 to the Chinese Patent Office , The entire contents of which are incorporated herein by reference.

  The present disclosure relates to the field of wireless communication technology, and in particular to a method and apparatus for determining CSI-RS transmission resources.

  In LTE (Long Term Evolution) release 10, a base station sets CSI-RS (Channel State Information-Reference Signal) to a user equipment. Correspondingly, the base station can transmit CSI-RS in a specific subframe, and the user equipment can transmit channel quality based on CSI-RS, eg PMI (Precoding Matrix Indicator; Precoding Matrix Indicator) , Measurement of CQI (Channel Quality Indicator) or RI (Rank Indication; rank indicator), and rate matching can be performed.

  In a TDD (Time Division Duplexing) system, one radio frame includes a normal uplink subframe, a normal downlink subframe and a special subframe (belonging to a downlink subframe). Both normal subframes and special subframes are used for CSI-RS transmission, but in different types of subframes, physical resources occupied by CSI-RS are different. Therefore, in determining the resource position of the CSI-RS, the user equipment needs to first determine whether the subframe for CSI-RS transmission is a special subframe or a normal downlink subframe, and further the CSI Determine the resource location of the RS. In the normal case, the UL / DL configuration may determine the subframe type, which may be a normal downlink subframe or a special subframe. In the current LTE system, it is possible to cope with many different types of UL / DL configurations, and in some cases, it is also possible to cope with dynamic changes of UL / DL configurations.

  From this, it can be understood that determining the resource position of the CSI-RS from the UL / DL configuration is an urgent technical issue.

  Embodiments of the present disclosure provide CSI-RS transmission resource determination method and apparatus for user equipment to determine CSI-RS resource location from UL / DL configuration.

  As a first aspect, in the CSI-RS transmission resource determination method according to an embodiment of the present disclosure, the user equipment UE acquires UL / DL configuration information for determining CSI-RS resource positions; The user equipment determines a subframe type of a subframe for CSI-RS transmission based on the UL / DL configuration information, and the user equipment determines the CSI-RS based on the determined subframe type. Determining the resource position of the CSI-RS in the transmission subframes.

  In one possible embodiment, the user equipment is a type of UL / DL configuration information for determining CSI-RS resource location based on a system agreement or user-specific signaling transmitted from a base station. Acquired by multiple types of signaling.

  In one possible embodiment, the user equipment is a type of broadcast signaling transmitted from a base station, physical layer downlink signaling transmitted from a base station, and user-specific high layer signaling transmitted from a base station. Or get UL / DL configuration information by multiple types.

  In one possible embodiment, the user equipment is user-specific high-layer signaling for instructing the user equipment to acquire UL / DL configuration information by broadcast signaling and / or physical layer downlink signaling. UL / DL configuration information is obtained by broadcast signaling and / or physical layer downlink signaling based on instructions from the base station and directed by the user-specific high layer signaling.

  In one possible embodiment, the subframe type of the subframe for CSI-RS transmission determined by the user equipment based on the UL / DL configuration information is one or more types.

  In one possible embodiment, when the subframe type of the subframe for CSI-RS transmission determined on the basis of the UL / DL configuration information is one kind of the user equipment, the subframe for CSI-RS transmission The resource position of the CSI-RS is determined based on a single type of subframe type.

  In one possible embodiment, if the user equipment determines that subframe types of subframes for CSI-RS transmission determined based on the UL / DL configuration information are multiple types, the multiple types of subframe types Based on each of the above, the resource position of CSI-RS is determined to obtain the corresponding resource position set for each subframe type. The user equipment determines a corresponding CSI-RS resource position set for each subframe type as a CSI-RS resource position for downlink signal reception or measurement.

  In one possible embodiment, the user equipment determines the subframe type after determining the corresponding CSI-RS resource location set for each subframe type as the CSI-RS resource location for reception or measurement of the downlink signal. Union processing of the corresponding CSI-RS resource position set for each unit is performed to obtain a union, the downlink signal is received or measured by the union, or a CSI-RS resource position corresponding to each subframe type Each receives or measures the downlink signal at.

  In one possible embodiment, the CSI-RS transmission subframe is a seventh subframe of one radio frame.

  In one embodiment, the CSI-RS includes ZP CSI-RS and / or NZP CSI-RS, and the determined subframe type is an uplink normal subframe, a downlink normal subframe. And at least one of the special subframes.

  As a second aspect, a user equipment according to an embodiment of the present disclosure, based on an acquisition unit for acquiring UL / DL configuration information for determining CSI-RS resource position, and the UL / DL configuration information. And a first determination unit for determining a subframe type of a subframe for CSI-RS transmission, and a resource position of CSI-RS in the subframes for CSI-RS transmission based on the determined subframe type. And a second determination unit for determining.

  In one possible embodiment, the acquisition unit is a type of UL / DL configuration information for determining CSI-RS resource location based on a system agreement or user-specific signaling transmitted from a base station. Acquired by multiple types of signaling.

  In one possible embodiment, the acquisition unit is a type of broadcast signaling transmitted from a base station, physical layer downlink signaling transmitted from a base station, and user-specific high layer signaling transmitted from a base station. Or get UL / DL configuration information by multiple types.

  In one possible embodiment, the acquisition unit is user-specific high-layer signaling for instructing the user equipment to acquire UL / DL configuration information by broadcast signaling and / or physical layer downlink signaling. UL / DL configuration information is obtained by broadcast signaling and / or physical layer downlink signaling based on instructions from the base station and directed by the user-specific high layer signaling.

  In one possible embodiment, the subframe type of the subframe for CSI-RS transmission determined by the first determination unit based on the UL / DL configuration information is one or more types.

  In one possible embodiment, if the subframe type of the subframe for CSI-RS transmission determined by the first determination unit based on the UL / DL configuration information is one kind, the second determination unit may: The resource position of the CSI-RS is determined based on a single type of subframe type of the CSI-RS transmission subframe.

  In one possible embodiment, if there are a plurality of subframe types of subframes for CSI-RS transmission determined by the first determination unit based on the UL / DL configuration information, the second determination unit is configured to: The resource position of the CSI-RS is determined based on each of the plurality of types of subframe types to obtain a resource position set corresponding to each subframe type, and a CSI-RS resource corresponding to each subframe type The position set is determined as CSI-RS resource positions for reception or measurement of the downlink signal.

  In one possible embodiment, the subframes after the second determination unit determines the corresponding CSI-RS resource position set for each subframe type as a CSI-RS resource position for reception or measurement of downlink signals. Union processing of CSI-RS resource position set corresponding to each type is performed to obtain a union, downlink signal reception or measurement is performed with the union, or CSI-RS resource position corresponding to each subframe type The system further includes a signal processing module for performing reception or measurement of the downlink signal respectively in a set.

  In one possible embodiment, the CSI-RS transmission subframe is a seventh subframe of one radio frame.

  In one embodiment, the CSI-RS includes ZP CSI-RS and / or NZP CSI-RS, and the determined subframe type is an uplink normal subframe, a downlink normal subframe. And at least one of the special subframes.

  At least one of the above specific embodiments of the present disclosure has the following beneficial effects. In the above embodiment of the present disclosure, the user equipment determines the subframe type of the subframe for CSI-RS transmission based on the UL / DL configuration notified from the base station, and the subframe is determined based on the subframe type. By determining the resource position of the CSI-RS among them, it is realized to determine the resource position of the CSI-RS from the UL / DL configuration.

  In order to describe the embodiments of the present disclosure and the technical means of the prior art more clearly, the drawings required for describing the embodiments are briefly introduced below. Apparently, the drawings relating to the following description are merely some examples of the present disclosure. Those skilled in the art can obtain other drawings from these drawings on the premise that they do not work creatively.

7 is a flowchart of a method of determining CSI-RS transmission resources according to an embodiment of the present disclosure. FIG. 7 is a structural schematic view of a user equipment according to an embodiment of the present disclosure; FIG. 7 is a structural schematic view of user equipment according to another embodiment of the present disclosure;

  Hereinafter, specific embodiments of the present disclosure will be further described in the drawings and examples. The following examples are merely used to illustrate the present disclosure and are not intended to limit the scope of the present disclosure.

  In order to make the purpose, technical means and advantages of the embodiments of the present disclosure more clear, the drawings of the embodiments of the present disclosure clearly and completely describe the technical means of the embodiments of the present disclosure. Apparently, the described embodiments are part of the embodiments of the present disclosure and not all. Based on the embodiments of the present disclosure described, all embodiments that can be performed by those skilled in the art are all within the protection scope of the present disclosure.

  Unless otherwise defined, technical and scientific terms used herein have their ordinary meaning as understood by one of ordinary skill in the field to which the present disclosure belongs. The terms "first", "second" and similar terms used in the description and claims of the present disclosure are merely for the purpose of distinguishing between different component parts, and in no particular order, number or significance. I do not. Similarly, similar terms such as "one" or "one" indicate that at least one is present, and there is no limitation on the number. Similar terms such as "connection" and "connection" are not limited to physical or mechanical connection, but include electrical connection regardless of direct or indirect connection. The terms "upper", "lower", "left", "right" and the like simply represent relative positional relationships, and when the absolute position of the description target changes, the relative positional relationships also change correspondingly.

  In order to make the purpose, technical means, and advantages of the present disclosure clearer, the present disclosure will be further described below with reference to the drawings. Apparently, the described embodiments are part of the embodiments of the present disclosure and not all. Based on the embodiments of the present disclosure, all embodiments that can be performed by those skilled in the art without creative work are all within the protection scope of the present disclosure.

  FIG. 1 is a flowchart of a method of determining CSI-RS transmission resources according to an embodiment of the present disclosure. As shown in FIG. 1, the method includes the following steps 101 to 103.

  In step 101, a user equipment acquires UL / DL configuration information for determining CSI-RS resource locations.

  Specifically, the user equipment obtains UL / DL configuration information for determining the CSI-RS resource position by one or more types of signaling based on the system agreement or user dedicated signaling transmitted from the base station. Do.

  Specifically, the base station notifies UL / DL configuration information of the user equipment by, for example, the following scheme 1 to scheme 3.

  In scheme 1, the base station reports UL / DL configuration of user equipment by broadcast signaling.

  In scheme 2, a base station reports UL / DL configuration of the user equipment by physical layer downlink signaling. The physical layer downlink signaling may be DCI (Downlink Control Information: Downlink Control Information) carried on a PDCCH (Physical Downlink Control Channel).

  In scheme 3, the base station reports UL / DL configuration of user equipment by high layer signaling. Correspondingly, the high layer signaling indicates notification of UL / DL configuration of the user equipment by broadcast signaling or physical layer downlink signaling.

  The base station may notify the UL / DL configuration of the user equipment according to one of the above schemes, and may notify the UL / DL configuration of the user equipment according to the plurality of schemes. For example, in a scenario where the dynamic TDD transmission mechanism is not allowed, the base station reports UL / DL configuration of the user equipment only by broadcast signaling. Also for example, in a scenario where a dynamic TDD transmission mechanism is allowed, the base station reports UL / DL configuration of the user equipment by broadcast signaling, followed by one UL / DL by physical layer dynamic signaling (eg DCI) Instruct the configuration. Correspondingly, the user equipment can send and receive data based on the dynamically indicated UL / DL configuration.

  Correspondingly, the user equipment may receive UL or UL through one or more of broadcast signaling transmitted from the base station, physical layer downlink signaling transmitted from the base station, and user-specific high layer signaling transmitted from the base station. Get DL configuration information.

  For example, in the system, it is agreed that the user equipment determines the CSI-RS resource location based only on the UL / DL configuration information obtained from broadcast signaling. Alternatively, in the system, it is agreed that the user equipment determines the CSI-RS resource location based only on the UL / DL configuration information obtained from DCI. Alternatively, it is agreed in the system that the user equipment determines the CSI-RS resource location based on UL / DL configuration information obtained from broadcast signaling and physical layer downlink signaling. Also, for example, a user-specific RRC (Radio Resource Control; Radio resource; radio resource control) so that the base station determines the CSI-RS resource position based on UL / DL configuration information obtained from broadcast signaling or physical layer downlink signaling. Control) Signaling to notify user equipment.

  Here, the user equipment may acquire UL / DL configuration information by user-dedicated high layer signaling transmitted from the base station, specifically, from UL / DL configuration information from broadcast signaling and / or physical layer downlink signaling. Receive user-specific high-layer signaling from the base station to indicate to the user equipment acquisition of UEs, and further, UL / DL by broadcast signaling or physical layer downlink signaling based on instructions by the user-specific high-layer signaling Get configuration information.

  In step 102, the user equipment determines the subframe type of the subframe for CSI-RS transmission based on the UL / DL configuration information acquired in step 101.

  For example, with a period of 5 ms, the base station transmits CSI-RS every 5 subframes. At the user equipment side, subframe types are determined in a scheme according to an embodiment of the present disclosure for only specific subframes (that is, subframes for CSI-RS transmission), and CSI-RS resource positions are determined. In a normal case, in the subframe of the same type, the resource position of CSI-RS is constant in the subframe. However, depending on the actual need, CSI-RS resource locations may change dynamically within the subframe. The present disclosure does not limit this.

  The subframe type of the subframe for CSI-RS transmission determined by the user equipment based on the UL / DL configuration information is one or more types. For example, if the user equipment acquires the UL / DL configuration from only one of broadcast signaling, physical layer downlink signaling and high layer signaling transmitted from the base station, the determined CSI-RS for transmission sub The subframe type of the frame is only one type. The user equipment acquires UL / DL configuration from multiple types of signaling of broadcast signaling, physical layer downlink signaling and high layer signaling transmitted from the base station, and notifies the user equipment by the multiple types of signaling. If the UL / DL configuration to be performed is the same, the subframe type of the determined subframe for CSI-RS transmission is also only one type. The user equipment acquires UL / DL configuration from multiple types of signaling of broadcast signaling, physical layer downlink signaling and high layer signaling transmitted from the base station, and notifies the user equipment by the multiple types of signaling. If the UL / DL configuration to be performed is different, the subframe types of the determined subframes for CSI-RS transmission may be many types.

  An example is to support 7 different UL / DL configurations in the LTE system. As shown in Table 1 below, U indicates an uplink normal subframe, D indicates a downlink normal subframe, and S indicates a special subframe.

  Table 1 may be preset for the base station and the user equipment. The base station may transmit the UL / DL configuration ID in Table 1 when notifying UL / DL configuration information of the user equipment. The user equipment can obtain the corresponding UL / DL configuration from the UL / DL configuration ID.

  In step 103, the user equipment determines a CSI-RS resource position in the CSI-RS transmission subframe based on the determined subframe type.

  If there is only one subframe type of a subframe for CSI-RS transmission determined based on UL / DL configuration information, the user equipment is based on a single type of subframe type of the subframe for CSI-RS transmission. Then, the resource position of CSI-RS is determined.

  In addition, when the subframe type of the subframe for CSI-RS transmission determined based on the UL / DL configuration information is a plurality of types, the user equipment may perform CSI-RS based on each of the plurality of types of subframe types. Resource locations are determined to obtain a corresponding resource location set for each subframe type. The user equipment determines a corresponding CSI-RS resource position set for each subframe type as a CSI-RS resource position for downlink signal reception or measurement.

  Furthermore, after the user equipment determines the CSI-RS resource position set corresponding to each subframe type as the CSI-RS resource position for downlink signal reception or measurement, it receives downlink signals in the following two types of schemes Or measurement can be realized.

  Scheme 1: The user equipment performs union processing of CSI-RS resource position sets corresponding to each subframe type to obtain a union, and performs reception or measurement of downlink signals with the union.

  Scheme 2: The user equipment receives or measures downlink signals at the CSI-RS resource position set corresponding to each subframe type.

  For example, a resource position set of CSI-RSs corresponding to normal subframes is A, and a resource position set of CSI-RSs corresponding to special subframes is B. The user equipment receives or measures the downlink signal according to scheme 1, ie, the union C of sets A and B (ie, set C is the union of sets A and B) as CSI-RS resources In the case of a position set, the union C is used to receive or measure downlink signals to obtain one measurement result. When user equipment receives or measures downlink signals according to scheme 2, that is, when receiving or measuring downlink signals in set A and set B respectively, two measurement results (corresponding to set A and set B respectively) (Including the measurement results).

  An example is to support 7 different UL / DL configurations in the LTE system. Subframe 6 (in the wireless subframe sequence, the subframe number starts from 0 and is the seventh subframe) has different subframe types in different UL / DL configurations. For example, in UL / DL configuration 0, subframe 6 is a special subframe. Also, for example, in UL / DL configuration 3, subframe 6 is a normal downlink subframe. On the other hand, other subframes, such as subframe 0, are normal downlink subframes in different UL / DL configurations. Therefore, in subframe 6 only, there may be a plurality of subframe types of subframes for CSI-RS transmission determined by the user equipment based on UL / DL configuration information. Furthermore, in the embodiment of the present disclosure, with respect to subframe 6, the resource position of CSI-RS in subframe 6 is determined by the above method.

  The CSI-RS includes ZP CSI-RS and / or NZP CSI-RS. In the LTE system, the base station is used for data transmission for rate matching with NZP CSI-RS (Non-zero-power CSI-RS) for downlink CSI-RS measurement by the UE. Two types of CSI-RSs can be respectively configured in the UE: ZP CSI-RS (Zero-power CSI-RS; Zero Power CSI-RS) for indicating a non-physical resource to the UE.

  In the above embodiment of the present disclosure, the user equipment UE determines the subframe type of the subframe for CSI-RS transmission based on the UL / DL configuration notified from the base station, and the user equipment UE determines the subframe type based on the subframe type. The resource position of CSI-RS is determined among subframes. Therefore, the embodiment of the present disclosure shows how the user equipment is instructed when the base station indicates UL / DL configuration of the user equipment by multiple types of signaling and UL / DL configuration instructed by multiple types of signaling is different. More preferably, the subframe type of the CSI-RS transmission subframe is determined, and the technical problem of determining the CSI-RS resource position in the CSI-RS transmission subframe is solved.

  In order to understand the above embodiments of the present disclosure more clearly, the specific implementation processes of the above embodiments of the present disclosure will be described below by taking specific application scenarios as an example.

  The user equipment acquires UL / DL configuration information by broadcast signaling transmitted from the base station, and based on the UL / DL configuration information, subframe types of subframes for CSI-RS transmission are shown in Table 1 It is determined to be UL / DL configuration 1. In this case, subframe 1 and subframe 6 are special subframes, and the others are normal subframes. When the user equipment corresponds to the dynamic TDD function, that is, it can acquire the UL / DL configuration transmitted by physical layer dynamic signaling from the base station, the UL / DL indicated by the physical layer dynamic signaling The configuration may be the same as or different from the UL / DL configuration indicated in the broadcast signaling. When UL / DL configuration 3 shown in Table 1 is indicated by physical layer dynamic signaling, subframe 1 is a special subframe and the others are normal subframes.

  Example 1: When the UL / DL configuration indicated in physical layer dynamic signaling and broadcast signaling is different, the user equipment is based on the UL / DL configuration indicated in the agreed upon signaling with the base station The resource position of CSI-RS may be determined among subframes for CSI-RS transmission, and UL indicated in physical layer dynamic signaling or broadcast signaling based on RRC signaling of 1 bit transmitted from the base station. The / DL configuration may be determined to determine the resource position of the CSI-RS in the subframe for CSI-RS transmission.

  The user equipment determines the UL / DL configuration indicated in the broadcast signaling based on the agreement with the base station or the RRC signaling of the base station, and transmits the CSI-RS sub-frames among the CSI-RS transmission subframes. When determining the resource position, it is determined based on UL / DL configuration 1 that subframe 6 is a special subframe. The user equipment sets the resource position in the special subframe based on the current CSI-RS resource, and determines the CSI-RS resource position in subframe 6. Furthermore, the user equipment performs downlink channel measurement or downlink interference measurement of subframe 6 based on the determined CSI-RS resource position.

  Example 2: When the UL / DL configuration indicated in physical layer dynamic signaling and broadcast signaling is different, the user equipment respectively transmits CSI based on the UL / DL configuration indicated in physical layer dynamic signaling and broadcast signaling. -The resource position of CSI-RS is determined among the RS transmission subframes.

  The user equipment determines that subframe 6 is a special subframe based on UL / DL configuration 1 notified to broadcast signaling, and determines the resource position in the special subframe based on the current CSI-RS resources. To determine the resource set A of the CSI-RS in subframe 6. Also, based on UL / DL configuration 3 instructed by physical layer dynamic signaling, it is determined that subframe 6 is a normal subframe, and the resource position in the normal subframe is determined based on the current CSI-RS resources. To determine the resource set B of the CSI-RS in subframe 6.

  If the CSI-RS is a ZP CSI-RS, then the user equipment takes both resource sets A and B as resource positions of the ZP CSI-RS, and performs downlink on both physical resources corresponding to the resource sets A and B. Do not perform channel measurement, or perform downlink interference measurement on both physical resources corresponding to resource sets A and B.

  Also, if the CSI-RS is an NZP CSI-RS, the user equipment measures downlink channels with resource sets A and B, respectively, and uses the measurement results for downlink CSI acquisition.

  FIG. 2 is a structural diagram of user equipment according to an embodiment of the present disclosure. As shown in FIG. 2, the user equipment specifically includes an acquisition unit 201, a first determination unit 202, a second determination unit 203, and may further include a signal processing unit 204.

  The acquisition unit 201 acquires UL / DL configuration information for determining CSI-RS resource positions. The first determination unit 202 determines a subframe type of a subframe for CSI-RS transmission based on the UL / DL configuration information. The second determination unit 203 determines a CSI-RS resource position in the CSI-RS transmission subframe based on the determined subframe type. The signal processing unit 204 performs reception or measurement of the downlink signal with a union of CSI-RS resource position sets corresponding to each subframe type, or respectively with a CSI-RS resource position set corresponding to each subframe type. Receive or measure downlink signals.

  Specifically, the acquisition unit 201 performs UL / DL configuration information for determining CSI-RS resource location based on one or more types of signaling based on the agreement of the system or user dedicated signaling transmitted from the base station. get.

  The base station notifies UL / DL configuration information of the user equipment according to the following several types of schemes.

  In scheme 1, the base station reports UL / DL configuration of user equipment by broadcast signaling.

  In scheme 2, a base station reports UL / DL configuration of the user equipment by physical layer downlink signaling. The physical layer downlink signaling may be DCI carried on PDCCH.

  In scheme 3, a base station reports UL / DL configuration of the user equipment by high layer signaling. The high layer signaling indicates notification of UL / DL configuration of the user equipment by broadcast signaling or physical layer downlink signaling.

  The base station may notify the UL / DL configuration of the user equipment according to one of the above schemes, and may notify the UL / DL configuration of the user equipment according to the plurality of schemes. For example, in a scenario where the dynamic TDD transmission mechanism is not allowed, the base station reports UL / DL configuration of the user equipment only by broadcast signaling. Also, for example, in a scenario where a dynamic TDD transmission mechanism is allowed, the base station reports UL / DL configuration of the user equipment by broadcast signaling and subsequently one UL / DL by physical layer dynamic signaling (eg DCI). Indicate DL configuration. Correspondingly, the user equipment can send and receive data based on the dynamically indicated UL / DL configuration.

  Correspondingly, the acquisition unit 201 of the user equipment is a type of broadcast signaling transmitted from the base station, physical layer downlink signaling transmitted from the base station, and high layer signaling dedicated to users transmitted from the base station. Acquire UL / DL configuration information by multiple types.

  For example, in the system, it is agreed that the user equipment determines the CSI-RS resource location based only on the UL / DL configuration information obtained from broadcast signaling. Alternatively, in the system, it is agreed that the user equipment determines the CSI-RS resource location based only on the UL / DL configuration information obtained from DCI. Alternatively, in the system, it is agreed that the user equipment determines the CSI-RS resource location based on the UL / DL configuration information obtained from broadcast signaling and DCI. Also, for example, the base station notifies the user equipment by RRC signaling dedicated to the user to determine the resource position of the CSI-RS based on UL / DL configuration information acquired from broadcast signaling or DCI.

  Here, acquisition of UL / DL configuration information by user-dedicated high-layer signaling transmitted from a base station is specifically performed by UL / DL configuration information by broadcast signaling and / or physical layer downlink signaling. Receive user-specific high-layer signaling from the base station to instruct the acquisition unit to acquire. The acquisition unit acquires UL / DL configuration information by broadcast signaling or physical layer downlink signaling based on an instruction by the user-specific high layer signaling.

  Specifically, the subframe type of the subframe for CSI-RS transmission determined by the first determination unit 202 based on the UL / DL configuration information is one or more types. For example, if the acquisition unit 201 acquires the UL / DL configuration by only one of broadcast signaling, physical layer downlink signaling and high layer signaling transmitted from the base station, the first determination unit 202 determines The subframe type of the CSI-RS transmission subframe is only one type. Also, the acquisition unit 201 acquires UL / DL configuration by plural types of signaling among broadcast signaling, physical layer downlink signaling and high layer signaling transmitted from the base station, and the user equipment by the plural types of signaling. If the UL / DL configuration notified to is the same, the subframe type of the subframe for CSI-RS transmission determined by the first determination unit 202 is also only one type. Also, the acquisition unit 201 acquires UL / DL configuration by plural types of signaling among broadcast signaling, physical layer downlink signaling and high layer signaling transmitted from the base station, and the user equipment by the plural types of signaling. If the UL / DL configuration notified to is different, subframe types of subframes for CSI-RS transmission determined by the first determination unit 202 may be many types.

  When the subframe type of the subframe for CSI-RS transmission determined by the first determination unit 202 based on the UL / DL configuration information is only one type, the second determination unit 203 determines whether the subframe for CSI-RS transmission is The resource position of CSI-RS is determined based on a single type of subframe type.

  When the subframe type of the subframe for CSI-RS transmission determined by the first determination unit 202 based on the UL / DL configuration information is a plurality of types, the second determination unit 203 selects each of the plurality of subframe types. Resource positions of the CSI-RS are determined based on and to obtain a corresponding resource position set for each subframe type. The second determination unit 203 determines a CSI-RS resource position set corresponding to each subframe type as a CSI-RS resource position for downlink signal reception or measurement.

  Specifically, after the second determination unit 203 determines a CSI-RS resource position set corresponding to each subframe type as a CSI-RS resource position for reception or measurement of a downlink signal, the signal processing unit 204 The reception or measurement of the downlink signal can be realized in two ways.

  Scheme 1: Union processing of CSI-RS resource position sets corresponding to each subframe type is performed to obtain a union, and downlink signal reception or measurement is performed using the union.

  Scheme 2: The downlink signal is received or measured at the corresponding CSI-RS resource position set for each subframe type.

  For example, a resource position set of CSI-RSs corresponding to normal subframes is A, and a resource position set of CSI-RSs corresponding to special subframes is B. The user equipment receives or measures the downlink signal according to scheme 1, that is, the union C of sets A and B (ie, set C is the union of sets A and B) as CSI-RS In the case of a set of resource locations, the union C is used to receive or measure downlink signals to obtain one measurement result. When user equipment receives or measures downlink signals according to scheme 2, that is, when receiving or measuring downlink signals in set A and set B respectively, two measurement results (corresponding to set A and set B respectively) (Including the measurement results).

  An example is to support 7 different UL / DL configurations in the LTE system. Subframe 6 (in the wireless subframe sequence, the subframe number starts from 0 and is the seventh subframe) has different subframe types in different UL / DL configurations. For example, in UL / DL configuration 0, subframe 6 is a special subframe. In UL / DL configuration 3, subframe 6 is a normal downlink subframe. On the other hand, other subframes, such as subframe 0, are normal downlink subframes in different UL / DL configurations. Therefore, in subframe 6 only, there may be a plurality of subframe types of subframes for CSI-RS transmission determined by the user equipment based on UL / DL configuration information. Furthermore, in the embodiment of the present disclosure, with respect to subframe 6, the resource position of CSI-RS in subframe 6 is determined by the above method.

  The CSI-RS includes ZP CSI-RS and / or NZP CSI-RS.

  In the above embodiment of the present disclosure, the user equipment determines the subframe type of the subframe for CSI-RS transmission based on the UL / DL configuration notified from the base station, and based on the subframe type, the user equipment determines the subframe type. The resource position of CSI-RS in the frame is determined. When the UL / DL configuration of the user equipment is instructed from the base station by plural types of signaling, and the UL / DL configuration instructed by the plural types of signaling is different, the subframe of CSI-RS transmission is determined by the user equipment The sub-frame type of is determined, and the technical subject whether it determines the resource position of CSI-RS among the sub-frames for CSI-RS transmission is further solved.

  Based on the same technical idea, the embodiments of the present disclosure further provide an apparatus capable of realizing the flow of determining CSI-RS transmission resources according to the embodiments of the present disclosure.

  FIG. 3 is a structural schematic view of an apparatus according to an embodiment of the present disclosure. The apparatus includes a processor 301, a memory 302, a transceiver 303, and a bus interface.

  The processor 301 manages the bus architecture and normal processing. The memory 302 can store data used when the processor 301 executes an operation. The transceiver 303 transmits and receives data under the control of the processor 301.

  The bus architecture includes any number of interconnecting buses and bridges, and more specifically, one or more processors including processor 301 and circuits of various types of memories including memory 302. is there. The bus architecture may be connected with other types of circuits such as peripheral equipment, regulators, and power management circuits. These are all well known in the art and will not be further described in the text. The bus interface provides an interface. The transceiver 303 may be a plurality of components, ie, including a transmitter and a receiver, provided as a unit that communicates with each other type of device over a transmission medium. The processor 301 manages the bus architecture and normal processing. The memory 302 can store data used when the processor 301 executes an operation.

  The determination flow of CSI-RS transmission resources according to an embodiment of the present disclosure is applicable to or implemented by the processor 301. In the implementation process, each step of the determination flow of CSI-RS transmission resources is performed by instructions in the form of hardware integrated logic circuit or software in the processor 301. The processor 301 is a general purpose processor, a digital signal processor, a dedicated integrated circuit, an FPGA or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and each method in the embodiment of the present disclosure. Steps and logic block diagrams can be implemented or carried out. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method according to the embodiments of the present disclosure may be performed and performed directly by a processor of hardware or may be performed and performed by a combination of hardware and software modules in the processor. The software module is located in a storage medium known in the art, such as a RAM, a flash memory, a ROM, a PROM or an EEPROM, and a register. The storage medium is located in the memory 302. The processor 301 reads the information in the memory 302 and combines with its hardware to carry out the steps of the decision flow of CSI-RS transmission resources.

  Specifically, the processor 301 acquires UL / DL configuration information for determining a CSI-RS resource position by reading a program in the memory 302, and based on the UL / DL configuration information, the CSI. -Determining a subframe type of an RS transmission subframe, and determining a CSI-RS resource position in the CSI-RS transmission subframe based on the determined subframe type .

  Specifically, the user equipment obtains UL / DL configuration information for determining the CSI-RS resource position by one or more types of signaling based on the system agreement or user dedicated signaling transmitted from the base station. Do.

  Specifically, UL / DL configuration information is acquired by broadcast signaling transmitted from the base station, physical layer downlink signaling transmitted from the base station, and high-layer signaling dedicated to users transmitted from the base station.

  Here, the user equipment acquiring UL / DL configuration information by user-dedicated high layer signaling transmitted from the base station is specifically UL / DL configuration information by broadcast signaling and / or physical layer downlink signaling. Receive user-specific high layer signaling from the base station to indicate to the user equipment acquisition of. The user equipment acquires UL / DL configuration information by broadcast signaling or physical layer downlink signaling based on an instruction by the user dedicated high layer signaling.

  Specifically, based on the agreement of the system, UL / DL configuration information for determining CSI-RS resource position may be acquired from one or more of the above three types of signaling. Even if UL / DL configuration information for determining CSI-RS resource position is acquired from one or more of the above three types of signaling based on RRC transmitted from the base station. Good. For example, in the system, it is agreed that the user equipment determines the CSI-RS resource location based only on the UL / DL configuration information obtained from broadcast signaling. Also, for example, it is agreed that the base station notifies the user equipment by RRC signaling so as to determine the resource position of the CSI-RS based on the broadcast signaling and the UL / DL configuration information acquired from the DCI. Here, RRC signaling may include signaling to determine subframe types.

  Specifically, the subframe type of the subframe for CSI-RS transmission determined based on the UL / DL configuration information is one or more types. For example, if the user equipment acquires the UL / DL configuration from only one of broadcast signaling, physical layer downlink signaling and high layer signaling transmitted from the base station, the determined CSI-RS for transmission sub The subframe type of the frame is only one type. The user equipment acquires UL / DL configuration from multiple types of signaling of broadcast signaling, physical layer downlink signaling and high layer signaling transmitted from the base station, and notifies the user equipment by the multiple types of signaling. If the UL / DL configuration to be performed is the same, the subframe type of the determined subframe for CSI-RS transmission is also only one type. In addition, the user equipment acquires UL / DL configuration from plural types of signaling among broadcast signaling, physical layer downlink signaling and high layer signaling transmitted from the base station, and the user equipment with the plural types of signaling. If the UL / DL configuration notified to is different, the subframe types of the determined subframes for CSI-RS transmission may be many types.

  When the subframe type of the subframe for CSI-RS transmission determined based on the UL / DL configuration information is only one type, based on a single type of subframe type of the subframe for CSI-RS transmission, CSI- Determine the resource position of RS.

  When there are multiple types of subframe types of subframes for CSI-RS transmission determined based on UL / DL configuration information, the resource position of CSI-RS is determined based on each of the multiple types of subframe types. Then, a corresponding resource position set is obtained for each subframe type. A CSI-RS resource position set corresponding to each subframe type is determined as a CSI-RS resource position for downlink signal reception or measurement.

  Specifically, the user equipment determines the CSI-RS resource position set corresponding to each subframe type as the CSI-RS resource position for reception or measurement of the downlink signal, and then performs downlink signals in the following two types of methods. Reception or measurement can be realized.

  Scheme 1: The user equipment receives or measures downlink signals with a union of CSI-RS resource location sets corresponding to each subframe type.

  Scheme 2: The user equipment receives or measures downlink signals at the CSI-RS resource position set corresponding to each subframe type.

  Here, the CSI-RS transmission subframe is the seventh subframe in one radio frame. The CSI-RS includes ZP CSI-RS and / or NZP CSI-RS.

  The present disclosure has been described with reference to flow diagrams and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the disclosure. It should be understood that each flow and / or block in the flow diagram and / or block diagram and the combination of the flow and / or block in the flow diagram and / or block diagram can be realized by computer program command. These computer program commands are provided to a processor of a general purpose computer, a special purpose computer, a built-in processor or other programmable data processing device to form one device, and an instruction to be executed by the processor of the computer or other programmable data processing device Thus, an apparatus is provided for implementing the functions specified in one or more flows of the flow diagram and / or one or more blocks of the block diagram.

  These computer program commands may be stored in computer readable memory, which can be caused to cause a computer or other programmable data processing device to operate in a specific manner, with the commands stored in the computer readable memory Form a product that contains command devices. The command device implements the functions specified in one or more flows of the flow diagram and / or one or more blocks of the block diagram.

  These computer program commands may be loaded onto a computer or other programmable data processing device, and form a computer implemented process by performing a series of operating steps on the computer or other programmable data processing device. And provide steps for implementing the functions specified in one or more flows of the flow diagram and / or one or more blocks of the block diagram according to a command executed on the computer or other programmable data processing device Do.

  Having described the preferred embodiments of the present disclosure, one of ordinary skill in the art, once knowing the basic creativity concepts, can make other changes and modifications to these embodiments. Accordingly, the appended claims are intended to cover the preferred embodiments and all changes and modifications that fall within the scope of the present disclosure.

Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the claims of the present disclosure and the technical scope thereof, the present disclosure is intended to include these variations and modifications.

Claims (21)

The user equipment UE acquires UL / DL configuration information for determining CSI-RS resource location;
The user equipment determines a subframe type of a subframe for CSI-RS transmission based on the UL / DL configuration information;
The user equipment determines the CSI-RS resource position among the CSI-RS transmission subframes based on the determined subframe type, and a CSI-RS transmission resource determination method.   The above-mentioned user equipment acquires UL / DL configuration information for determining the resource position of CSI-RS by one or more kinds of signaling based on the agreement of the system or user dedicated signaling transmitted from a base station. The method described in 1. The user equipment may obtain UL / DL configuration information for determining CSI-RS resource location,
UL / DL configuration information according to one or more types of broadcast signaling transmitted from the base station, physical layer downlink signaling transmitted from the base station, and user-specific high layer signaling transmitted from the base station by the user equipment The method according to claim 1 or 2, comprising obtaining. The user equipment may acquire UL / DL configuration information by high layer signaling dedicated to a user transmitted from a base station,
Receiving from the base station user-specific high-layer signaling for instructing the user equipment to obtain UL / DL configuration information via broadcast signaling and / or physical layer downlink signaling;
The method according to claim 3, comprising the step of the user equipment obtaining UL / DL configuration information by broadcast signaling and / or physical layer downlink signaling based on an indication by the user dedicated high layer signaling.   The method according to any one of claims 1 to 4, wherein the subframe type of the subframe for CSI-RS transmission determined by the user equipment based on the UL / DL configuration information is one or more types. It is possible that the user equipment determines a CSI-RS resource position in the CSI-RS transmission subframe based on the determined subframe type,
If the subframe type of the subframe for CSI-RS transmission determined by the user equipment based on the UL / DL configuration information is one kind of subframe type of the subframe for CSI-RS transmission The method according to claim 5, comprising determining a CSI-RS resource location based on it. It is possible that the user equipment determines a CSI-RS resource position in the CSI-RS transmission subframe based on the determined subframe type,
When there are a plurality of subframe types of subframes for CSI-RS transmission determined by the user equipment based on the UL / DL configuration information, CSI-RS is determined based on each of the plurality of subframe types. Determining the resource location of each to obtain a corresponding resource location set for each subframe type;
The method according to claim 5, comprising: the user equipment determining a corresponding CSI-RS resource position set for each subframe type as a CSI-RS resource position for downlink signal reception or measurement. After the user equipment determines a corresponding CSI-RS resource position set for each subframe type as a CSI-RS resource position for downlink signal reception or measurement,
The user equipment performs union processing of CSI-RS resource position sets corresponding to each subframe type to obtain a union, and performs reception or measurement of a downlink signal with the union;
The method according to claim 7, comprising the user equipment performing reception or measurement of downlink signal respectively at a corresponding CSI-RS resource position set for each subframe type.   The method according to claim 7, wherein the CSI-RS transmission subframe is a seventh subframe of one radio frame. The CSI-RS includes ZP CSI-RS and / or NZP CSI-RS,
10. The method according to any one of the preceding claims, wherein the determined subframe type comprises at least one of uplink normal subframes, downlink normal subframes and special subframes. An acquisition unit for acquiring UL / DL configuration information for determining a CSI-RS resource position;
A first determination unit for determining a subframe type of a subframe for CSI-RS transmission based on the UL / DL configuration information;
A user equipment UE including: a second determination unit for determining a CSI-RS resource position among subframes for CSI-RS transmission based on the determined subframe type.   The acquisition unit acquires UL / DL configuration information for determining a CSI-RS resource position by one or more types of signaling based on a system agreement or user dedicated signaling transmitted from a base station. 11. The user equipment according to 11.   The acquisition unit includes UL / DL configuration information according to one or more types of broadcast signaling transmitted from a base station, physical layer downlink signaling transmitted from a base station, and user-specific high layer signaling transmitted from a base station. The user equipment according to claim 11 or 12 to acquire. The acquisition unit is
Receiving from the base station user-specific high-layer signaling for instructing the user equipment to obtain UL / DL configuration information via broadcast signaling and / or physical layer downlink signaling;
The user equipment according to claim 13, wherein UL / DL configuration information is acquired by broadcast signaling and / or physical layer downlink signaling based on an indication by the user-specific high layer signaling.   The subframe type of the subframe for CSI-RS transmission determined by the first determination unit based on the UL / DL configuration information is one or more types of user according to any one of claims 11 to 14. machine.   If the subframe type of the subframe for CSI-RS transmission determined by the first determination unit based on the UL / DL configuration information is one kind, the second determination unit may determine whether the subframe for CSI-RS transmission is The user equipment according to claim 15, wherein the CSI-RS resource location is determined based on a single type of subframe type.   When the subframe type of the subframe for CSI-RS transmission determined by the first determination unit based on the UL / DL configuration information is a plurality of types, the second determination unit is configured of the plurality of types of subframe types. Based on each, the resource position of CSI-RS is determined to obtain the resource position set corresponding to each subframe type, and the CSI-RS resource position set corresponding to each subframe type is received for the downlink signal The user equipment according to claim 18, which is determined as a CSI-RS resource position for measurement.   A CSI-RS resource corresponding to each subframe type after the second determination unit determines a CSI-RS resource position set corresponding to each subframe type as a CSI-RS resource position for reception or measurement of a downlink signal Union processing of position sets is performed to obtain a union, and reception or measurement of downlink signals is performed in the union, or downlink signal reception or each is performed in a corresponding CSI-RS resource position set for each subframe type The user equipment of claim 17, further comprising a signal processing module for making measurements.   The user equipment according to claim 17, wherein the CSI-RS transmission subframe is a seventh subframe of one radio frame. The CSI-RS includes ZP CSI-RS and / or NZP CSI-RS,
The user equipment according to any one of claims 11 to 19, wherein the determined subframe type includes at least one of an uplink normal subframe, a downlink normal subframe and a special subframe. A processor,
A memory connected to the processor via a bus interface for storing programs and data used for execution of operations by the processor;
A user equipment UE comprising: a transceiver for communicating with each type of other equipment on a transmission medium,
When the processor calls and executes programs and data stored in the memory:
Obtaining UL / DL configuration information for determining CSI-RS resource location;
Determining a subframe type of a subframe for CSI-RS transmission based on the UL / DL configuration information;
User equipment UE which performs determining the resource position of CSI-RS among the subframes for CSI-RS transmission based on the determined subframe type.

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